Search results for "Doppler"
showing 10 items of 637 documents
Inflammation, atherosclerotic burden and cardiovascular prognosis.
2006
The aim of this study was to evaluate the impact of various inflammatory markers on atherosclerotic burden and cardiovascular prognosis.In a prospective study 720 patients preceding coronary angiography were enrolled. In all patients carotid and leg arteries were examined using sonographic methods and C-reactive protein, fibrinogen, interleukin-18 (IL-18) and interleukin-6 have been determined. Patients were compared with regard to atherosclerotic burden: no clinically significant stenosis (N=57, 7.9%), coronary artery disease only (N=362, 50.3%), coronary artery disease with peripheral atherosclerosis (=multi-vascular atherosclerosis, N=301, 41.8%).Follow-up data after a median of 6.5 year…
PREDICTION OF CEREBROVASCULAR AND CARDIOVASCULAR EVENTS IN PATIENTS WITH SUBLINICAL CAROTID ATHEROSCLEROSIS: THE ROLE OF C-REACTIVE PROTEIN
2008
Background Several studies have suggested that inflammation and infection may be important for accelerated progression of atherosclerosis, but few data are available on subjects with early stages of atherosclerosis. Methods and Results We included, in a prospective 5-year follow-up study, 150 patients with subclinical carotid atherosclerosis, evaluating at baseline all established traditional cardiovascular risk factors (eg, older age, male sex, obesity, hypertension, diabetes, smoking, family history of coronary artery disease, and dyslipidemia); 2 markers of inflammation, fibrinogen, and high-sensitivity C-reactive protein (CRP); and the seropositivity to Helicobacter pylori, Chlamydia pn…
Delayed filling of retinal and ciliary circulation after central retinal artery occlusion
1988
The filling times of the retinal and choroidal circulation were evaluated in 17 patients with central retinal artery occlusion by means of fluorescein angiography. A correlation between the filling times of the two circulations was found. However, two filling patterns were seen: first, both fillings delayed; second, both fillings normal. It is probable that in the former case an obstructive disease of the carotid arteries exists, while in the latter case an important pathology of the carotid arteries is lacking, favouring a rapid restoration of the retinal circulation. This hypothesis seems to be confirmed by the results of the Doppler velocimetry of the carotid arteries.
Changes in ultrasound-assessed carotid intima-media thickness and plaque with a Mediterranean diet: a substudy of the PREDIMED trial.
2014
OBJECTIVE - : The Prevención con Dieta Mediterránea (PREDIMED) trial showed that a Mediterranean diet (MedDiet) supplemented with either extra virgin olive oil or 30 g/d of mixed nuts reduced incident cardiovascular events compared with a control (low fat) diet. The mechanisms of cardiovascular protection afforded by MedDiets remain to be uncovered. We assessed the effect of both supplemented MedDiets on internal carotid intima-media thickness (ICA-IMT) and plaque height, the ultrasound features that best predict future cardiovascular events, in subjects at high cardiovascular risk. APPROACH AND RESULTS - : In a PREDIMED subcohort (n=175), plaque height and carotid IMT of 3 prespecified seg…
Metabolic syndrome (MetS) predicts cardio and cerebrovascular events in a twenty years follow-up. A prospective study.
2012
BACKGROUND AND PURPOSE: Metabolic syndrome (MetS) is a cluster of cardiovascular risk factors, considered as emerging and promoting atherosclerosis. This study aimed at the evaluation of the influence of MetS on the prediction of cerebro and cardiovascular events during a 20 years follow-up period in an asymptomatic population of middle-aged subjects. METHODS: We evaluated 529 asymptomatic persons through a prospective study. Study population was divided into two subgroups: patients with and without MetS. Echo-color-Doppler was used in order to assess the presence of subclinical atherosclerosis. A 20 years follow-up study was carried out in order to estimate the incidence of cerebro and car…
Characterization of the cortical laser-doppler flow and hippocampal degenerative patterns after global cerebral ischaemia in the goat.
1998
Large-animal models offer several advantages in the study of cerebral ischaemia: easier control of physiological variables, easier neuropathological evaluation, etc. In the present study we have taken advantage of the unique cerebrovascular anatomy of the goat to reproduce a model of reversible, incomplete, global cerebral ischaemia in a large-sized animal species, in which the effects of successive manoeuvres to stop and re-start cerebral blood flow can be recorded continuously. Early cortical laser-Doppler flow response (up to 2 h) and delayed neuronal degeneration (7 days) in the hippocampal CA1 subfield have been analysed in goats undergoing 5, 10 or 20 min of transient, global cerebral…
Markers of inflammation are strong predictors of subclinical and clinical atherosclerosis in women with hypertension
2008
Cardiovascular diseases in women still rises and remains their leading cause of death in most developed countries; yet we have less sex-specific data in women than in men as a result of lower enrollment in clinical trials and low rates of sex-specific reporting. The aim of our study was to evaluate in hypertensive postmenopausal women the potential predictive role of markers of inflammation, for example, fibrinogen and C-reactive protein (CRP), on subclinical and clinical atherosclerosis, beyond that of the other established cardiovascular risk factors. We studied 127 asymptomatic hypertensive postmenopausal women with different degrees of carotid intima–media thickness, as examined by the …
Ultrasonography for evaluation of the carotid artery in head and neck cancer.
1994
The dynamic relationship of lymph node metastases to surrounding vascular structures in the neck is important for preoperative patient assessment. When carotid artery involvement is suspected, this relationship often determines whether or not to operate. In the case of adhesive neck metastases along the internal jugular vein, it becomes possible to predict preoperatively if the integrity of this vein may be preserved. Ultrasonography has the ability to differentiate subtle from gross adherence, or simple compression from vascular invasion. This is done by manually palpating the tumor mass and asking the patient to perform various maneuvers while observing on a monitor the relationship of th…
ASSOCIATION BETWEEN RENAL RESISTIVE INDEX AND CAROTID INTIMA-MEDIA THICKNESS IN HYPERTENSIVE PATIENTS.
2013
Introduction: The assessment of renal hemodynamic parameters by duplex Doppler sonography has been used for many years as a diagnostic tool in the daily work-up of kidney diseases. Recent data suggest that these parameters, especially the intrarenal resistive index (RI) may be also associated with changes of the systemic vascular tree and with an enhanced cardiovascular risk. However, conflicting data exist in literature about the independent association of carotid intima-media thickness (IMT) with RI. Aim: To evaluate the relationship between RI and carotid IMT in the hypertensive subjects consecutively attending our hypertension centre. Methods: We enrolled 264 subjects, aged between 30 a…
Integrated non-invasive approach to atherosclerosis with cardiac CT and carotid ultrasound in patients with suspected coronary artery disease
2017
The aim of the study was to compare the atherosclerotic disease in the coronary and carotid arteries in patients who underwent non-invasive imaging for suspected stable coronary artery disease (CAD). 107 patients (64 men, age 59 ± 12) with atypical chest pain underwent cardiac CT (CCT) and carotid ultrasound (US) on the same day. Severity (obstructive or not-obstructive disease), location, shape, and composition of atherosclerotic plaques in the two districts were evaluated. Patients presented normal coronary arteries in 36 % (n = 38), not-obstructive CAD in 36 % (n = 39), and obstructive CAD in 28 % (n = 30), while had normal carotid arteries in 53 % (n = 57), not-obstructive disease in 44…